summaryrefslogtreecommitdiffstats
path: root/include/net/devlink.h
blob: ed7687bbf5d08f1bb5327f3f8c9e3e543e98e7c2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
/*
 * include/net/devlink.h - Network physical device Netlink interface
 * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */
#ifndef _NET_DEVLINK_H_
#define _NET_DEVLINK_H_

#include <linux/device.h>
#include <linux/slab.h>
#include <linux/gfp.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <net/net_namespace.h>
#include <uapi/linux/devlink.h>

struct devlink_ops;

struct devlink {
	struct list_head list;
	struct list_head port_list;
	struct list_head sb_list;
	struct list_head dpipe_table_list;
	struct devlink_dpipe_headers *dpipe_headers;
	const struct devlink_ops *ops;
	struct device *dev;
	possible_net_t _net;
	char priv[0] __aligned(NETDEV_ALIGN);
};

struct devlink_port {
	struct list_head list;
	struct devlink *devlink;
	unsigned index;
	bool registered;
	enum devlink_port_type type;
	enum devlink_port_type desired_type;
	void *type_dev;
	bool split;
	u32 split_group;
};

struct devlink_sb_pool_info {
	enum devlink_sb_pool_type pool_type;
	u32 size;
	enum devlink_sb_threshold_type threshold_type;
};

/**
 * struct devlink_dpipe_field - dpipe field object
 * @name: field name
 * @id: index inside the headers field array
 * @bitwidth: bitwidth
 * @mapping_type: mapping type
 */
struct devlink_dpipe_field {
	const char *name;
	unsigned int id;
	unsigned int bitwidth;
	enum devlink_dpipe_field_mapping_type mapping_type;
};

/**
 * struct devlink_dpipe_header - dpipe header object
 * @name: header name
 * @id: index, global/local detrmined by global bit
 * @fields: fields
 * @fields_count: number of fields
 * @global: indicates if header is shared like most protocol header
 *	    or driver specific
 */
struct devlink_dpipe_header {
	const char *name;
	unsigned int id;
	struct devlink_dpipe_field *fields;
	unsigned int fields_count;
	bool global;
};

/**
 * struct devlink_dpipe_match - represents match operation
 * @type: type of match
 * @header_index: header index (packets can have several headers of same
 *		  type like in case of tunnels)
 * @header: header
 * @fieled_id: field index
 */
struct devlink_dpipe_match {
	enum devlink_dpipe_match_type type;
	unsigned int header_index;
	struct devlink_dpipe_header *header;
	unsigned int field_id;
};

/**
 * struct devlink_dpipe_action - represents action operation
 * @type: type of action
 * @header_index: header index (packets can have several headers of same
 *		  type like in case of tunnels)
 * @header: header
 * @fieled_id: field index
 */
struct devlink_dpipe_action {
	enum devlink_dpipe_action_type type;
	unsigned int header_index;
	struct devlink_dpipe_header *header;
	unsigned int field_id;
};

/**
 * struct devlink_dpipe_value - represents value of match/action
 * @action: action
 * @match: match
 * @mapping_value: in case the field has some mapping this value
 *                 specified the mapping value
 * @mapping_valid: specify if mapping value is valid
 * @value_size: value size
 * @value: value
 * @mask: bit mask
 */
struct devlink_dpipe_value {
	union {
		struct devlink_dpipe_action *action;
		struct devlink_dpipe_match *match;
	};
	unsigned int mapping_value;
	bool mapping_valid;
	unsigned int value_size;
	void *value;
	void *mask;
};

/**
 * struct devlink_dpipe_entry - table entry object
 * @index: index of the entry in the table
 * @match_values: match values
 * @matche_values_count: count of matches tuples
 * @action_values: actions values
 * @action_values_count: count of actions values
 * @counter: value of counter
 * @counter_valid: Specify if value is valid from hardware
 */
struct devlink_dpipe_entry {
	u64 index;
	struct devlink_dpipe_value *match_values;
	unsigned int match_values_count;
	struct devlink_dpipe_value *action_values;
	unsigned int action_values_count;
	u64 counter;
	bool counter_valid;
};

/**
 * struct devlink_dpipe_dump_ctx - context provided to driver in order
 *				   to dump
 * @info: info
 * @cmd: devlink command
 * @skb: skb
 * @nest: top attribute
 * @hdr: hdr
 */
struct devlink_dpipe_dump_ctx {
	struct genl_info *info;
	enum devlink_command cmd;
	struct sk_buff *skb;
	struct nlattr *nest;
	void *hdr;
};

struct devlink_dpipe_table_ops;

/**
 * struct devlink_dpipe_table - table object
 * @priv: private
 * @name: table name
 * @size: maximum number of entries
 * @counters_enabled: indicates if counters are active
 * @counter_control_extern: indicates if counter control is in dpipe or
 *			    external tool
 * @table_ops: table operations
 * @rcu: rcu
 */
struct devlink_dpipe_table {
	void *priv;
	struct list_head list;
	const char *name;
	u64 size;
	bool counters_enabled;
	bool counter_control_extern;
	struct devlink_dpipe_table_ops *table_ops;
	struct rcu_head rcu;
};

/**
 * struct devlink_dpipe_table_ops - dpipe_table ops
 * @actions_dump - dumps all tables actions
 * @matches_dump - dumps all tables matches
 * @entries_dump - dumps all active entries in the table
 * @counters_set_update - when changing the counter status hardware sync
 *			  maybe needed to allocate/free counter related
 *			  resources
 */
struct devlink_dpipe_table_ops {
	int (*actions_dump)(void *priv, struct sk_buff *skb);
	int (*matches_dump)(void *priv, struct sk_buff *skb);
	int (*entries_dump)(void *priv, bool counters_enabled,
			    struct devlink_dpipe_dump_ctx *dump_ctx);
	int (*counters_set_update)(void *priv, bool enable);
};

/**
 * struct devlink_dpipe_headers - dpipe headers
 * @headers - header array can be shared (global bit) or driver specific
 * @headers_count - count of headers
 */
struct devlink_dpipe_headers {
	struct devlink_dpipe_header **headers;
	unsigned int headers_count;
};

struct devlink_ops {
	int (*port_type_set)(struct devlink_port *devlink_port,
			     enum devlink_port_type port_type);
	int (*port_split)(struct devlink *devlink, unsigned int port_index,
			  unsigned int count);
	int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);
	int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
			   u16 pool_index,
			   struct devlink_sb_pool_info *pool_info);
	int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
			   u16 pool_index, u32 size,
			   enum devlink_sb_threshold_type threshold_type);
	int (*sb_port_pool_get)(struct devlink_port *devlink_port,
				unsigned int sb_index, u16 pool_index,
				u32 *p_threshold);
	int (*sb_port_pool_set)(struct devlink_port *devlink_port,
				unsigned int sb_index, u16 pool_index,
				u32 threshold);
	int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
				   unsigned int sb_index,
				   u16 tc_index,
				   enum devlink_sb_pool_type pool_type,
				   u16 *p_pool_index, u32 *p_threshold);
	int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
				   unsigned int sb_index,
				   u16 tc_index,
				   enum devlink_sb_pool_type pool_type,
				   u16 pool_index, u32 threshold);
	int (*sb_occ_snapshot)(struct devlink *devlink,
			       unsigned int sb_index);
	int (*sb_occ_max_clear)(struct devlink *devlink,
				unsigned int sb_index);
	int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
				    unsigned int sb_index, u16 pool_index,
				    u32 *p_cur, u32 *p_max);
	int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
				       unsigned int sb_index,
				       u16 tc_index,
				       enum devlink_sb_pool_type pool_type,
				       u32 *p_cur, u32 *p_max);

	int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
	int (*eswitch_mode_set)(struct devlink *devlink, u16 mode);
	int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
	int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode);
	int (*eswitch_encap_mode_get)(struct devlink *devlink, u8 *p_encap_mode);
	int (*eswitch_encap_mode_set)(struct devlink *devlink, u8 encap_mode);
};

static inline void *devlink_priv(struct devlink *devlink)
{
	BUG_ON(!devlink);
	return &devlink->priv;
}

static inline struct devlink *priv_to_devlink(void *priv)
{
	BUG_ON(!priv);
	return container_of(priv, struct devlink, priv);
}

struct ib_device;

#if IS_ENABLED(CONFIG_NET_DEVLINK)

struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
int devlink_register(struct devlink *devlink, struct device *dev);
void devlink_unregister(struct devlink *devlink);
void devlink_free(struct devlink *devlink);
int devlink_port_register(struct devlink *devlink,
			  struct devlink_port *devlink_port,
			  unsigned int port_index);
void devlink_port_unregister(struct devlink_port *devlink_port);
void devlink_port_type_eth_set(struct devlink_port *devlink_port,
			       struct net_device *netdev);
void devlink_port_type_ib_set(struct devlink_port *devlink_port,
			      struct ib_device *ibdev);
void devlink_port_type_clear(struct devlink_port *devlink_port);
void devlink_port_split_set(struct devlink_port *devlink_port,
			    u32 split_group);
int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
			u32 size, u16 ingress_pools_count,
			u16 egress_pools_count, u16 ingress_tc_count,
			u16 egress_tc_count);
void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
int devlink_dpipe_table_register(struct devlink *devlink,
				 const char *table_name,
				 struct devlink_dpipe_table_ops *table_ops,
				 void *priv, u64 size,
				 bool counter_control_extern);
void devlink_dpipe_table_unregister(struct devlink *devlink,
				    const char *table_name);
int devlink_dpipe_headers_register(struct devlink *devlink,
				   struct devlink_dpipe_headers *dpipe_headers);
void devlink_dpipe_headers_unregister(struct devlink *devlink);
bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
					 const char *table_name);
int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
				   struct devlink_dpipe_entry *entry);
int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
int devlink_dpipe_action_put(struct sk_buff *skb,
			     struct devlink_dpipe_action *action);
int devlink_dpipe_match_put(struct sk_buff *skb,
			    struct devlink_dpipe_match *match);

#else

static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
					    size_t priv_size)
{
	return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);
}

static inline int devlink_register(struct devlink *devlink, struct device *dev)
{
	return 0;
}

static inline void devlink_unregister(struct devlink *devlink)
{
}

static inline void devlink_free(struct devlink *devlink)
{
	kfree(devlink);
}

static inline int devlink_port_register(struct devlink *devlink,
					struct devlink_port *devlink_port,
					unsigned int port_index)
{
	return 0;
}

static inline void devlink_port_unregister(struct devlink_port *devlink_port)
{
}

static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,
					     struct net_device *netdev)
{
}

static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,
					    struct ib_device *ibdev)
{
}

static inline void devlink_port_type_clear(struct devlink_port *devlink_port)
{
}

static inline void devlink_port_split_set(struct devlink_port *devlink_port,
					  u32 split_group)
{
}

static inline int devlink_sb_register(struct devlink *devlink,
				      unsigned int sb_index, u32 size,
				      u16 ingress_pools_count,
				      u16 egress_pools_count,
				      u16 ingress_tc_count,
				      u16 egress_tc_count)
{
	return 0;
}

static inline void devlink_sb_unregister(struct devlink *devlink,
					 unsigned int sb_index)
{
}

static inline int
devlink_dpipe_table_register(struct devlink *devlink,
			     const char *table_name,
			     struct devlink_dpipe_table_ops *table_ops,
			     void *priv, u64 size,
			     bool counter_control_extern)
{
	return 0;
}

static inline void devlink_dpipe_table_unregister(struct devlink *devlink,
						  const char *table_name)
{
}

static inline int devlink_dpipe_headers_register(struct devlink *devlink,
						 struct devlink_dpipe_headers *
						 dpipe_headers)
{
	return 0;
}

static inline void devlink_dpipe_headers_unregister(struct devlink *devlink)
{
}

static inline bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
						       const char *table_name)
{
	return false;
}

static inline int
devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
{
	return 0;
}

static inline int
devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
			       struct devlink_dpipe_entry *entry)
{
	return 0;
}

static inline int
devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
{
	return 0;
}

static inline int
devlink_dpipe_action_put(struct sk_buff *skb,
			 struct devlink_dpipe_action *action)
{
	return 0;
}

static inline int
devlink_dpipe_match_put(struct sk_buff *skb,
			struct devlink_dpipe_match *match)
{
	return 0;
}

#endif

#endif /* _NET_DEVLINK_H_ */